半纤维素在制过程中的结构变化及其与纳米纤维素的相互作用
Xingyu Lan1, Shiyu Fu1, Junlong Song2
1State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, China.
International journal of biological macromolecules
|November 1, 2023
概括
高H因子的 kraft 纸改变了半纤维素的结构,削弱了它与纳米纤维素的结合亲和力. 这影响了纤维素-半纤维素相互作用,对植物细胞结构至关重要.
科学领域:
- 木材化学 木材化学
- 材料科学 材料科学 材料科学
- 生物质加工生物质加工
背景情况:
- 半纤维素对于植物细胞壁中的纤维素和素的结合至关重要.
- 了解半纤维素-纳米纤维相互作用是生物质利用的关键.
研究的目的:
- 在纳米纤维素上量化评估半纤维素分量的吸附行为.
- 调查 kraft 纸条件如何影响半纤维素结构及其与纳米纤维素的相互作用.
主要方法:
- 使用受控的H因子进行 Kraft 纸.
- 半纤维素和纳米纤维素分量的定量评估.
- 使用石英晶微平衡与分散监测 (QCM-D) 进行吸附行为分析.
主要成果:
- 更严厉的制 (高H因子) 降低了半纤维素分子量和增加了线性.
- 半纤维素对纤维素纳米晶 (CNC) 传感器具有自然的亲和力.
- 高H因子纤维化减少了半纤维素对纳米纤维素的吸附,减缓了吸附率并改变了吸附层的构造,导致较弱,可逆的结合.
结论:
- 在高H因子下进行 Kraft 纸,可显著改变半纤维素的结构.
- 变化的半纤维素结构导致其与纳米纤维素相互作用强度的变化.
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